feat: Add support for .NET 8.0 + Update package references

- Updated the .NET version from 6.0.x to 8.0.x in the workflow file.
- Removed the Markdig package reference from the test project.
- Updated the Markdig package reference in the main project from version 0.32.0 to 0.36.2.
- Changed the target frameworks in the main project to net6.0 and net8.0.

These changes ensure compatibility with newer versions of .NET and update dependencies for improved functionality and security.

.github/workflows/build-test.yml

@@ -13,16 +13,16 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0 # avoid shallow clone so nbgv can do its work.
 
-      - name: Setup .NET 6.0
-        uses: actions/setup-dotnet@v2
+      - name: Setup .NET 8.0
+        uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: '6.0.x'
+          dotnet-version: '8.0.x'
 
-      - uses: dotnet/[email protected].1
+      - uses: dotnet/[email protected]
         id: nbgv
 
       - name: Restore dependencies

.github/workflows/nuget-push.yml

@@ -42,16 +42,16 @@ jobs:
         ]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0 # avoid shallow clone so nbgv can do its work.
 
-      - name: Setup .NET 6.0
-        uses: actions/setup-dotnet@v2
+      - name: Setup .NET 8.0
+        uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: 6.0.x
+          dotnet-version: 8.0.x
 
-      - uses: dotnet/[email protected].1
+      - uses: dotnet/[email protected]
         id: nbgv
 
       - name: Restore dependencies
@@ -61,14 +61,14 @@ jobs:
         run: dotnet build
 
       - id: is-public-release
-        uses: ASzc/change-string-case-action@v2
+        uses: ASzc/change-string-case-action@v4
         with:
           string: ${{ steps.nbgv.outputs.PublicRelease }}
 
       # Publish
       - name: Build, Pack & Publish ${{ matrix.project.name }} to ${{ matrix.nuget.name }}
         id: publish_nuget
-        uses: Rebel028/publish-nuget@v2.7.0
+        uses: Rebel028/publish-nuget@v2.8.0
         with:
           # Filepath of the project to be packaged, relative to root of repository
           PROJECT_FILE_PATH: ${{ matrix.project.path }}

Nodsoft.Markdig.SyntaxHighlighting.Tests/Nodsoft.Markdig.SyntaxHighlighting.Tests.csproj

@@ -1,15 +1,14 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFramework>net6.0</TargetFramework>
+        <TargetFramework>net8.0</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
 
         <IsPackable>false</IsPackable>
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Markdig" Version="0.32.0" />
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.1.0"/>
         <PackageReference Include="NSubstitute" Version="5.0.0" />
         <PackageReference Include="NSubstitute.Analyzers.CSharp" Version="1.0.16">

Nodsoft.Markdig.SyntaxHighlighting/Nodsoft.Markdig.SyntaxHighlighting.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFramework>net6.0</TargetFramework>
+        <TargetFrameworks>net6.0;net8.0</TargetFrameworks>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
         <LangVersion>latest</LangVersion>
@@ -18,13 +18,13 @@
         <RepositoryType>git</RepositoryType>
 
         <PackageReadmeFile>README.md</PackageReadmeFile>
-        <PackageLicenseFile>LICENSE</PackageLicenseFile>
+        <PackageLicenseExpression>ISC</PackageLicenseExpression>
         <PackageIcon>icon.png</PackageIcon>
     </PropertyGroup>
 
     <ItemGroup>
       <PackageReference Include="ColorCode.HTML" Version="2.0.15" />
-      <PackageReference Include="Markdig" Version="0.32.0" />
+      <PackageReference Include="Markdig" Version="0.36.2" />
     </ItemGroup>
 
 </Project>